jargonApplied AI·Embeddings and retrieval
you built the index, watched memory use climb and the build take a while, and got fast accurate search out of it.
HNSW
Draft summary, pending review
Hierarchical navigable small world: the dominant ANN index, a layered graph navigated greedily from coarse to fine. Fast and accurate, at the cost of memory and slower index builds. The default in most vector stores, including pgvector.